Question

A number is 27 more than the number obtained by revorsing its digits. It its unit's and ten's digit are x and y respectively, write their linear equation representing the above statement.
Class 9, Mathematics, Linear Equations with 2 variables.
Thank you ♡​

Answer 1

Solution:-

verified

Let the number's unit's digit is x and ten's digit is y

Then the number= x+10y

If we reverse the number's digit then the number = y+10x

Given that the number is 27 more than the reversed number  

So, (x+10y)−(y+10x)=27

Or  x+10y−y−10x=27

Or  9y−9x−27=0

Or y−x−3=0

Hope it helps u :)

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